How to write a program to solve project euler problem 5 ?

/* This file is worked ( mostly copy and paste ) from from http://www.programminglogic.com/solution-to-project-euler-5/
Notice that if the number is evenly divisible by all numbers from 11 to 20 it's also divisible by all numbers
from 2 to 10.
*/

#include <stdio.h>

int main(){
int i,j,counter;
for (i=10;i<1000000000;i++){
counter=0;
for (j=11;j<21;j++){
if (i%j==0)
counter++;
}
if (counter==10){
printf("%d \n",i);
break;
}
}
return 0;
}